NASCAM All-Sky Imager Raw PGM Data Readfile

Python library for reading NASCAM All-Sky Imager (ASI) stream0 raw PNG-file data. The data can be found at https://data.phys.ucalgary.ca.

Supported Datasets

• NASCAM ASI raw: stream0.png PNG files

Installation

The nascam-imager-readfile library is available on PyPI:

$ python3 -m pip install nascam-imager-readfile

Supported Python Versions

nascam-imager-readfile officially supports Python 3.8+.

Examples

Example Python notebooks can be found in the "examples" directory. Further, some examples can be found in the "Usage" section below.

Usage

Import the library using import nascam_imager_readfile

Warning: On Windows, be sure to put any read calls into a main() method. This is because we utilize the multiprocessing library and the method of forking processes in Windows requires it. Note that if you're using Jupyter or other IPython-based interfaces, this is not required.

Read a single file

>>> import nascam_imager_readfile
>>> filename = "path/to/data/2010/01/01/atha_nascam-iccd04/ut06/20100101_0600_atha_nascam-iccd04.png.tar"
>>> img, meta, problematic_files = nascam_imager_readfile.read(filename)

Read multiple files

>>> import nascam_imager_readfile, glob
>>> file_list = glob.glob("path/to/files/2010/01/01/atha_nascam-iccd04/ut06/*.tar")
>>> img, meta, problematic_files = nascam_imager_readfile.read(file_list)

Read using multiple worker processes

>>> import nascam_imager_readfile, glob
>>> file_list = glob.glob("path/to/files/2010/01/01/atha_nascam-iccd04/ut06/*.tar")
>>> img, meta, problematic_files = nascam_imager_readfile.read(file_list, workers=4)

Read with no output

>>> import nascam_imager_readfile, glob
>>> file_list = glob.glob("path/to/files/2010/01/01/atha_nascam-iccd04/ut06/*.tar")
>>> img, meta, problematic_files = nascam_imager_readfile.read(file_list, workers=4, quiet=True)

Development

Clone the repository and install dependencies using Poetry.

$ git clone https://github.com/ucalgary-aurora/nascam-imager-readfile.git
$ cd nascam-imager-readfile/python
$ make install

Testing

$ make test
[ or do each test separately ]
$ make test-flake8
$ make test-pylint
$ make test-pytest